Table of Contents

Solution 1: Restart your computer

The most common causes of this error are another program using the file or a problem with the file that was caused when the computer was shut off unexpectedly (like a power failure). The good news is that most of the time, simply restarting your computer and then restarting Firefox is the fix for both problems.

Solution 2: Create a new places database

If restarting your computer doesn’t take care of things, you can fix this by having Firefox create a new places database for you. Don’t worry, it’s not as hard as it sounds.

Part 2 – Create the database

Click the menu button
and then click ExitQuit
.
Wait until Firefox has completely quit.

In the Firefox profile folder, find and rename the files places.sqlite and places.sqlite-journal (if it exists).

To rename a file, right-click on it and select rename from the menuclick on it once to select it and then click a second time on the file name to make it editable. Then add .old to the end of its name.

Finally, reopen Firefox.

When Firefox reopens it will create a new places database. Your browsing history will be lost but Firefox will automatically import your bookmarks from the most recent backup file.